import java.util.*;
import java.io.*;

public class Exercise46{
  public static void main (String[] args) throws IOException{

    BufferedReader in = new BufferedReader(new InputStreamReader(System.in));

    for (int a = 0; a < 1000; a++){
      System.out.printf("%03d\n", a);
      System.out.flush();

      String result = new String(in.readLine());

      if (result.equals("unlocked")){
        break;
      }
    }
  }
}